scholarly journals Determination of Stent Load Conditions in New Zealand White Rabbit Urethra

2020 ◽  
Vol 11 (4) ◽  
pp. 70
Author(s):  
Agnieszka G. Mackiewicz ◽  
Tomasz Klekiel ◽  
Jagoda Kurowiak ◽  
Tomasz Piasecki ◽  
Romuald Bedzinski
Keyword(s):  
Zealand White Rabbit ◽  
Experimental Tests ◽  
Medical Intervention ◽  
Urine Flow ◽  
Measuring System ◽  
Urethral Stenosis ◽  
New Zealand White Rabbit ◽  
Innovative Methods ◽  
Rabbit Urethra

Background: Frequency of urethral stenosis makes it necessary to develop new innovative methods of treating this disease. This pathology most often occurs in men and manifests itself in painful urination, reduced urine flow, or total urinary retention. This is a condition that requires immediate medical intervention. Methods: Experimental tests were carried out on a rabbit in order to determine the changes of pressure in the urethra system and to estimate the velocity of urine flow. For this purpose, a measuring system was proposed to measure the pressure of a fluid-filled urethra. A fluoroscope was used to observe the deformability of the bladder and urethra canal. Results: Based on these tests, the range of changes in the urethra tube diameter, the pressures inside the system, and the flow velocity during micturition were determined. Conclusions: The presented studies allowed determining the behavior of the urethra under the conditions of urinary filling. The fluid-filled bladder and urethra increased their dimensions significantly. Such large changes require that the stents used for the treatment of urethral stenosis should not have a fixed diameter but should adapt to changing urethral dimensions.

Hisotological and radiographic determination of the age of physeal closure of the distal femur, proximal tibia, and proximal fibula of the New Zealand white rabbit

1994 ◽  
Vol 12 (5) ◽  
pp. 747-749 ◽  
Author(s):  
Moises Kaweblum ◽  
Maria Del Carmen Aguilar ◽  
Eduardo Blancas ◽  
Jaime Kaweblum ◽  
Wallace B. Lehman ◽  
...  
Keyword(s):  
New Zealand ◽  
Distal Femur ◽  
Proximal Tibia ◽  
Zealand White Rabbit ◽  
Proximal Fibula ◽  
New Zealand White Rabbit ◽  
Physeal Closure

Determination of ampicillin in New Zealand white rabbit plasma using column switching technique and HPLC

1996 ◽  
Vol 42 (3-4) ◽  
pp. 223-226 ◽  
Author(s):  
T. A. Tolhurst ◽  
A. Negrusz ◽  
B. Libelt ◽  
E. F. Woods ◽  
B. S. Levine
Keyword(s):  
New Zealand ◽  
Zealand White Rabbit ◽  
Column Switching ◽  
Rabbit Plasma ◽  
New Zealand White Rabbit

Determination of Normal Echocardiographic, Electrocardiographic, and Radiographic Cardiac Parameters in the Conscious New Zealand White Rabbit

2015 ◽  
Vol 24 (2) ◽  
pp. 223-234 ◽  
Author(s):  
Amália Turner Giannico ◽  
Daniela Aparecida Ayres Garcia ◽  
Leandro Lima ◽  
Fátima Aparecida de Lara ◽  
Clara Alita Corona Ponczek ◽  
...  
Keyword(s):  
New Zealand ◽  
Zealand White Rabbit ◽  
New Zealand White Rabbit

scholarly journals Raman Sensor for the Determination of Gas Solubility

Physchem ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 176-188
Author(s):  
Gregor Lipinski ◽  
Markus Richter
Keyword(s):  
Carbon Dioxide ◽  
Gas Separation ◽  
Accurate Determination ◽  
Measurement Techniques ◽  
Screening Tools ◽  
Measuring System ◽  
Separation Processes ◽  
Use Of Resources ◽  
Gas Solubilities

Efficient and environmentally responsible use of resources requires the development and optimization of gas separation processes. A promising approach is the use of liquids that are designed for specific tasks, e.g., the capture of carbon dioxide or other greenhouse gases. This requires an accurate determination of gas solubilities for a broad range of temperatures and pressures. However, state of the art measurement techniques are often very time consuming or exhibit other pitfalls that prevent their use as efficient screening tools. Here, we show that the application of Raman spectroscopy through a compact measuring system can simplify data acquisition for the determination of gas solubilities in liquids. To demonstrate that this approach is expedient, we determined gas solubilities of carbon dioxide in water for three isotherms T = (288.15, 293.15, 298.15) K over a pressure range from p = (0.5–5) MPa and in three imidazolium-based ionic liquids for one isotherm T = 298.15 K at pressures from p = (0.1–5) MPa. When compared to data in the literature, all results are within the reported uncertainties of the measurement techniques involved. The developed analysis method eliminates the need for a lengthy volume or mass calibration of the sample prior to the measurements and, therefore, allows for fast screening of samples, which can help to advance gas separation processes in scientific and industrial applications.

scholarly journals The Effect of Process Parameters in Helical Rolling of Balls on the Quality of Products and the Forming Process

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2125 ◽  
Author(s):  
Janusz Tomczak ◽  
Zbigniew Pater ◽  
Tomasz Bulzak
Keyword(s):  
Metal Flow ◽  
Experimental Tests ◽  
Rolling Process ◽  
Helical Rolling ◽  
Forming Process ◽  
University Of Technology ◽  
Quality Of Products ◽  
Skew Rolling

This paper presents selected numerical and experimental results of a skew rolling process for producing balls using helical tools. The study investigates the effect of the billet’s initial temperature on the quality of produced balls and the rolling process itself. In addition, the effect of billet diameter on the quality of produced balls is investigated. Experimental tests were performed using a helical rolling mill available at the Lublin University of Technology. The experiments consisted of rolling 40 mm diameter balls with the use of two helical tools. To determine optimal rolling parameters ensuring the highest quality of produced balls, numerical modelling was performed using the finite element method in the Forge software. The numerical analysis involved the determination of metal flow kinematics, temperature and damage criterion distributions, as well as the measurement of variations in the force parameters. The results demonstrate that the highest quality balls are produced from billet preheated to approximately 1000 °C.

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